Metal traces

Abstract

Examples of metal traces are described herein. In some examples, a print cartridge includes metal traces. Some examples of a print cartridge may include a joint. In some examples, the joint may be a laser-welded joint. In some examples of the print cartridge, the print cartridge may also include metal traces situated in the laser-welded joint.

1 . A print cartridge, comprising:
 a laser-welded joint; and   metal traces situated in the laser-welded joint.   
     
     
         2 . The print cartridge of  claim 1 , wherein the laser-welded joint is between opposite housing components including a first housing component and a second housing component, wherein the first housing component and the second housing component have an overlapping melting temperature range. 
     
     
         3 . The print cartridge of  claim 1 , further comprising a protective layer for the metal traces, wherein the protective layer has a melting temperature that is greater than a melting temperature of material along the laser-welded joint, and wherein the laser-welded joint is sealed around the protective layer. 
     
     
         4 . The print cartridge of  claim 3 , wherein the protective layer is flexible. 
     
     
         5 . The print cartridge of  claim 1 , wherein at least a portion of the print cartridge is designed to melt using a welding laser. 
     
     
         6 . The print cartridge of  claim 1 , wherein at least a portion of a first housing component of the print cartridge near the laser-welded joint is at least partly laser-transmissive or at least partly transparent. 
     
     
         7 . The print cartridge of  claim 1 , wherein an edge of the laser-welded joint comprises pressed-out material. 
     
     
         8 . The print cartridge of  claim 1 , wherein the metal traces extend through the laser-welded joint between an inside of the print cartridge and an outside of the print cartridge. 
     
     
         9 . The print cartridge of  claim 1 , wherein a width of a first metal trace at the laser-welded joint is less than a width of a protective layer. 
     
     
         10 . The print cartridge of  claim 1 , wherein the metal traces are spaced within a flexible film along the laser-welded joint. 
     
     
         11 . The print cartridge of  claim 1 , wherein a width of a first metal trace at the laser-welded joint is less than a width of a portion of the first metal trace that is away from the laser-welded joint. 
     
     
         12 . A print liquid supply unit, comprising:
 a laser-welded joint between a lid and a body of the print liquid supply unit; and   a laser-transmissive protective layer covering metal traces sealed in the laser-welded joint.   
     
     
         13 . The print liquid supply unit of  claim 12 , wherein the metal traces are positioned transversally to the laser-welded joint at a passage region. 
     
     
         14 . A method, comprising:
 installing metal traces in a first housing component of a print cartridge; and   laser welding the first housing component to a second housing component of the print cartridge across the metal traces.   
     
     
         15 . The method of  claim 14 , wherein the laser welding seals the metal traces in a joint between the first housing component and the second housing component.